Adding to 1112222 its reverse (2222111), we get a palindrome (3334333).
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a nude number because it is divisible by every one of its digits.
It is an Ulam number.
It is a plaindrome in base 10.
It is a zygodrome in base 10.
It is a congruent number.
It is an unprimeable number.
21112222 is an apocalyptic number.
1112222 is a wasteful number, since it uses less digits than its factorization.
1112222 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 29290.
The square root of 1112222 is about 1054.6193626138. The cubic root of 1112222 is about 103.6089232685.
The spelling of 1112222 in words is "one million, one hundred twelve thousand, two hundred twenty-two".